Carburetor float mechanism



Feb.-8, 1949. 4 R. M HEINTZ CARBURETOR FLOAT MECHANISM Filed Aug. 24, 1946 INVENTOR. BYRALPH M. HE/NTZ ATTORNEY Patented Feb. 8, 1949 UNITED CARBURETOB. FLOAT MECHANISM Ralph M. l-Ieintz, Cleveland, Ohio, assignor to Jack & Heintz Precision Industries, Inc., Cleveland, Ohio, a corporation of Delaware Application August 24, 1946, Serial No. 692,818

This invention relates in general to fuel engine carburetors and more particularly to improvements in carburetor float mechanism.

One of the primary objects of the invention is to provide a carburetor float mechanism that will compensate for tilt in any direction of the vehicle carrying the fuel engine and insure proper needle valve actuation.

Another object is to provide an improved linkage between the float and the needle valve which will make for cheapness in manufacture and ease of assembly and provide resiliency for shock absorbing purposes.

With the foregoing and other objects in view, the invention resides in the combination of parts and details of construction set forth in the following specification and appended claims, certain embodiments thereof being shown in the accompanying drawings, in which:

Figure 1 is a bottom plan view of the assembly with the bottom reservoir and one float removed;

Figure 2 is a view in section taken along line 2-2 of Figure 1 showing the needle valve and one float with the linkage therebetween; and

Figure 3 is a View in section taken along line 33 of Figure 1 showing both floats.

Referring more particularly to the drawings, the upper portion, minus the bottom reservoir, is

2 Claims. (Cl. 74-470) shown at l as a casting, to the lower side of which The assembly includes a pair of transversely V spaced floats l and 8 which ride upon the column of fuel liquid in the reservoir. Float 1 has secured thereto a spring member 9 which is looped about a transverse pin in supported by a bracket II that is secured by bolts I 2 to the casing. Likewise,

float 8 has secured thereto a similar spring member l3 which is looped about a transverse pin I 4 supported by a bracket l5 that is secured by bolts Hi to the casing. Thus, floats 1 and 8 are mounted for rotation fore and aft about pins l 0 and I4, respectively, which form an aligned transverse axis. Also suitably secured to the casing are a pair of brackets, such as shown in Figure 2 at I6, which support a rod l9 about which springs l1 and I8 are coiled to have one of their ends 2| and 22 individually abut the lower enlarged side 20 of the needle valve 6 tending to urge the latter upwardly, while the other ends 23 and 24 of the coil springs l1 and I8 extend angularly downwardly to be slidable in small holes in leaf springs 9 and I3.

Floats I and 8, bein mounted eccentrically about their pivot pins Ill and M, a rise or fall of fuel level in the reservoir will cause the floats to be rotated to impart rotation to leaf springs 9 and l3 and consequently springs l1 and I8 whose ends bear on the lower surface of the needle valve to move it up or down to permit increased or decreased fuel flow through inlets 3 and 5 into the reservoir. Due to the springiness of leaf springs 9 and i3 and coil springs I! and :8 this action is cushioned to prevent shock and stabilize the jarring impulses that would otherwise be imposed upon the needle valve if rigid linkage were used and the vehicle were suddenly rocked about its transverse axis. The arrangement of the two transversely spaced and pivoted floats provides for proper actuation of the needle valve regardless of tilt in any direction. The particular linkage described moreover is inexpensive and easy to assemble.

I claim:

1. In combination with a device employing a slidably mounted member and a pair of transversely spaced members pivotally mounted for movement in a fore and aft direction, a resilient linkage between each of said pivotal members and said slidable member of sliding actuation of said slidable member independently in response to pivotal movements of either or both of said pivotal members, said resilient linkage comprising a leaf spring connected to each of said pivotal members anda pair of separate coil springs one end of each of which bears against said slidable member and the other end of each of said coil springs bears against said leaf spring.

2. In combination in a device employing a slidably mounted member and a pair of transversely spaced members mounted for pivotal movement in a fore and aft direction, a resilient linkage between each of said pivotal members and said slidable member for sliding actuation thereof independently in response to pivotal movements of either or both of said pivotal members, said resilient linkage comprising a resilient member connected to each of said pivotal members and a pair of separate resilient members one part of each of which bears against said slidable member and another part of which bears against said first named resilient member.

RALPH M. HEINTZ.

REFERENCES orrnn The following references are of record in the flle of this patent:

UNITED STATES PATENTS Number. Name Date 1,015,053 Mayer Jan. 16, 1912 1,066,151 Rice July 1, 1913 1,598,948 Watt Sept. 7, 1926 2,193,095 Harrison Mar. 12, 1910 V FOREIGN PATENTS Number Country Date 588,837 France Feb. 11, 1925 

